175 lines
5.5 KiB
C
175 lines
5.5 KiB
C
/* BFD back-end for Texas Instruments TMS320C80 Multimedia Video Processor (MVP).
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Copyright 1996, 1997 Free Software Foundation, Inc.
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Written by Fred Fish (fnf@cygnus.com)
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There is nothing new under the sun. This file draws a lot on other
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coff files.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "bfd.h"
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#include "sysdep.h"
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#include "libbfd.h"
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#include "coff/tic80.h"
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#include "coff/internal.h"
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#include "libcoff.h"
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#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (2)
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#define coff_relocate_section _bfd_coff_generic_relocate_section
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static void rtype2howto PARAMS ((arelent *cache_ptr, struct internal_reloc *dst));
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static reloc_howto_type tic80_howto_table[] =
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{
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HOWTO (R_RELLONG, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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32, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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NULL, /* special_function */
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"32", /* name */
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true, /* partial_inplace */
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0xffffffff, /* src_mask */
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0xffffffff, /* dst_mask */
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false), /* pcrel_offset */
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HOWTO (R_MPPCR, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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32, /* bitsize */
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true, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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NULL, /* special_function */
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"MPPCR", /* name */
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true, /* partial_inplace */
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0xffffffff, /* src_mask */
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0xffffffff, /* dst_mask */
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true), /* pcrel_offset */
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HOWTO (R_ABS, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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32, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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NULL, /* special_function */
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"ABS", /* name */
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true, /* partial_inplace */
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0xffffffff, /* src_mask */
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0xffffffff, /* dst_mask */
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false), /* pcrel_offset */
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};
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/* Code to turn an external r_type into a pointer to an entry in the howto_table.
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If passed an r_type we don't recognize the abort rather than silently failing
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to generate an output file. */
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static void
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rtype2howto (cache_ptr, dst)
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arelent *cache_ptr;
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struct internal_reloc *dst;
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{
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switch (dst -> r_type)
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{
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default: abort (); break;
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case R_RELLONG: cache_ptr -> howto = tic80_howto_table + 0; break;
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case R_MPPCR: cache_ptr -> howto = tic80_howto_table + 1; break;
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case R_ABS: cache_ptr -> howto = tic80_howto_table + 2; break;
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}
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}
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#define RTYPE2HOWTO(cache_ptr, dst) rtype2howto (cache_ptr, dst)
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#define coff_rtype_to_howto coff_tic80_rtype_to_howto
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static reloc_howto_type *
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coff_tic80_rtype_to_howto (abfd, sec, rel, h, sym, addendp)
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bfd *abfd;
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asection *sec;
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struct internal_reloc *rel;
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struct coff_link_hash_entry *h;
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struct internal_syment *sym;
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bfd_vma *addendp;
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{
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arelent genrel;
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if (rel -> r_symndx == -1 && addendp != NULL)
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{
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/* This is a TI "internal relocation", which means that the relocation
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amount is the amount by which the current section is being relocated
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in the output section. */
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*addendp = (sec -> output_section -> vma + sec -> output_offset) - sec -> vma;
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}
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RTYPE2HOWTO (&genrel, rel);
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return genrel.howto;
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}
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#ifndef BADMAG
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#define BADMAG(x) TIC80BADMAG(x)
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#endif
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#define TIC80 1 /* Customize coffcode.h */
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#include "coffcode.h"
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const bfd_target
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tic80coff_vec =
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{
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"coff-tic80", /* name */
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bfd_target_coff_flavour,
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BFD_ENDIAN_LITTLE, /* data byte order is little (arch supports both) */
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BFD_ENDIAN_LITTLE, /* header byte order is little */
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(HAS_RELOC | EXEC_P | /* object flags */
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HAS_LINENO | HAS_DEBUG |
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HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
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(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
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'_', /* leading underscore */
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'/', /* ar_pad_char */
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15, /* ar_max_namelen */
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bfd_getl64, bfd_getl_signed_64, bfd_putl64,
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bfd_getl32, bfd_getl_signed_32, bfd_putl32,
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bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
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bfd_getl64, bfd_getl_signed_64, bfd_putl64,
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bfd_getl32, bfd_getl_signed_32, bfd_putl32,
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bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
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{_bfd_dummy_target, coff_object_p, /* bfd_check_format */
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bfd_generic_archive_p, _bfd_dummy_target},
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{bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
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bfd_false},
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{bfd_false, coff_write_object_contents, /* bfd_write_contents */
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_bfd_write_archive_contents, bfd_false},
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BFD_JUMP_TABLE_GENERIC (coff),
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BFD_JUMP_TABLE_COPY (coff),
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BFD_JUMP_TABLE_CORE (_bfd_nocore),
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BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
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BFD_JUMP_TABLE_SYMBOLS (coff),
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BFD_JUMP_TABLE_RELOCS (coff),
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BFD_JUMP_TABLE_WRITE (coff),
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BFD_JUMP_TABLE_LINK (coff),
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BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
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COFF_SWAP_TABLE
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};
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